Imagine sewing curves like Drunkard's Path without using any pins or clipping your fabric before you sew!!  This wonderful Curve Master foot does it all!  Package contains adapter shanks for most machines (Bernina users require a Bernina adapter).  I use mine on my Brother 1500 with adapter #6.  Package contains list of adapters and machines.  The learning 'curve' on this item is great..you will be using it almost immediately.  No need to change pressure feet when you are ready to sew a 1/4" seam...this foot will act as a 1/4" foot also.  Don't be caught without your Curve Master!